It is given sequence wih length of 2017 which consists of first 2017 positive integers in arbitrary order (every number occus exactly once). Let us consider a first term from sequence, let it be k. From given sequence we form a new sequence of length 2017, such that first k elements of new sequence are same as first k elements of original sequence, but in reverse order while other elements stay unchanged. Prove that if we continue transforming a sequence, eventually we will have sequence with first element 1. Sequenceiterationscombinatorics